On Mon, Jan 24, 2011 at 10:41 AM, Dejan Muhamedagic <deja...@fastmail.fm> wrote: > Hi, > > On Sat, Jan 22, 2011 at 01:38:12PM -0500, Vadym Chepkov wrote: >> Hi, >> >> It seems crm shell can't express sequential="true" in collocating sets, >> which is strange, since, I assume, it's a default. >> >> If you load an example using cibadmin from "Configuration explained" >> >> Example 6.16. Using colocation sets to specify a common peer. >> <constraints> >> <rsc_colocation id="coloc-1" score="INFINITY" > >> <resource_set id="collocated-set-1" sequential="false"> >> <resource_ref id="A"/> >> <resource_ref id="B"/> >> <resource_ref id="C"/> >> </resource_set> >> <resource_set id="collocated-set-2" sequential="true"> >> <resource_ref id="D"/> >> </resource_set> >> </rsc_colocation> >> </constraints> >> >> >> It will look like this in crm configure show output: >> >> xml <rsc_colocation id="coloc-1" score="INFINITY"> \ >> <resource_set id="collocated-set-1" sequential="false"> \ >> <resource_ref id="A"/> \ >> <resource_ref id="B"/> \ >> <resource_ref id="C"/> \ >> </resource_set> \ >> <resource_set id="collocated-set-2" sequential="true"> \ >> <resource_ref id="D"/> \ >> </resource_set> \ >> </rsc_colocation> >> >> Not exactly a "simplification" >> >> Am I missing something? How one would express the same constraint using >> shell? > > By omitting sequential="true". The problem is that two XML > representation have the same meaning, but look slightly > different, which again makes shell think that it could've done > something wrong while rendering XML from the CLI presentation. > > Anyway, that should be fixed somehow. > > Thanks, > > Dejan
If you ever consider do something about it, here is another thing that can be lived with, but is non-intuitive. 1) colocation c1 inf: A B the most significant is B (if B is stopped nothing else will be running) 2) colocation c2 inf: A B C most significant - A 3) colocation c3 inf: ( A B ) C most significant - C 4) colocation c4 inf: ( A B ) C D most significant - C again I am trying to find a logic to remember this, but fails so far :) Thanks, Vadym _______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
